How does it work?
Using a disposable number on ASMS.ai is a three-step process with no friction. Browse the numbers page and pick any active number from the country you need, different services accept different country codes, so having genuine US, UK, and European numbers available matters. Enter that number into whatever site or app is asking for phone verification, then return to the number's inbox page and wait for your SMS to arrive. For major platforms, delivery typically takes a few seconds.
The inbox refreshes automatically, so there is no need to keep reloading the page. Once you have your verification code, you are done, nothing to delete, nothing to cancel, no account to close. Because the numbers are public and shared, they work best for one-time verifications rather than ongoing accounts tied to a personal identity. That is precisely what a burner number is designed for.
Is it really free?
Yes, the shared numbers are completely free. There is no freemium bait-and-switch, no trial period that quietly requires a card, and no soft paywall that materialises after your first use. Every number listed on the public page is open to every visitor, no gate required.
ASMS.ai does offer a paid private number tier for users who need a disposable number that persists across multiple sessions, or who require guaranteed exclusivity over their inbox. The REST API and native MCP server are similarly premium features aimed at developers and AI agent workflows. But for the vast majority of use cases, grabbing a verification code quickly, the free shared numbers do the job entirely.
Privacy and security: what shared numbers actually mean
Because the numbers are public, any message sent to them can be read by anyone on the site. That is the intended design, not a flaw. It means you should not use a shared disposable number for anything sensitive: banking two-factor authentication, password resets for important accounts, or any service where a stranger reading the message could cause real harm. For those situations, a private number or your own mobile is the right choice.
For low-stakes verifications, a new social account, a marketplace signup, a product trial, the shared model is both safe and practical. The privacy benefit is direct: the platform receiving your SMS verification code never learns your real phone number, which means it cannot sell that number to data brokers, enrol you in SMS marketing, or link it to your other online identities. That is the core promise of a throwaway phone number, and it holds for every free number on ASMS.ai.
Messages on shared numbers are wiped on a rolling schedule. There is no permanent archive of what came through a number last week, which limits the window of exposure. If you are in a jurisdiction with strict data-minimisation requirements, using a disposable number for non-sensitive verifications is a straightforward way to reduce your personal data footprint.
Why do people use a burner number?
The use cases for a disposable number are broader than most people initially expect. The most common is simple: avoiding the spam calls and texts that follow giving your real number to a website you do not fully trust. Sign up with a burner number, verify the account, and your personal mobile stays quiet.
Developers and QA engineers use disposable numbers constantly. Testing SMS-based login flows requires a fresh number for each test cycle, and burning through personal SIMs or paying for a dedicated test number is impractical at scale. Researchers, journalists, and investigators may need to register on platforms without leaving an obvious identity trail. Travellers use them when a local number is required for a regional service they only need briefly. Resellers and power users sometimes need to create multiple accounts on platforms that enforce a one-per-number policy.
The pattern across all these cases is the same: there is a phone number field standing between the user and something they need, and handing over a personal number carries a cost, privacy, convenience, or money, that a free disposable number eliminates.
What services can you verify?
Most SMS verification flows work fine with a shared disposable number, provided the service accepts the country code you have selected. Common verifications that work well include social platforms (Twitter/X, Telegram, Instagram, Facebook), messaging apps (Signal), marketplaces (eBay, Craigslist, Facebook Marketplace, Vinted), ride-hailing and food delivery apps, gaming platforms, streaming service trials, and SaaS free-tier sign-ups.
Some services actively block known shared-number ranges, this is their right, and it is worth knowing upfront. Google accounts and most financial services are among the more aggressive blockers. If a code does not arrive on the first attempt, switching to a number from a different country or a different carrier prefix often resolves it. The pool on ASMS.ai is rotated regularly to maintain a high hit rate across popular platforms.
If a specific service consistently rejects free shared numbers, upgrading to a private number from ASMS.ai is the practical next step. Private numbers are not listed publicly and are far less likely to appear on block lists, making them the reliable choice for stubborn verification flows.
Which countries are available?
ASMS.ai currently offers disposable phone numbers from the United States (+1), United Kingdom (+44), Germany (+49), Georgia (+995), and Ukraine (+380), with additional countries added as supply allows. US numbers have the broadest acceptance across international platforms. UK numbers work well for British services and most EU platforms. German numbers are useful across DACH-region services and anywhere a specifically European number is required.
Georgian and Ukrainian numbers serve a different tactical purpose: many services that have started blocking high-volume US and UK ranges still accept traffic from these markets, making them a practical fallback when your usual country code fails. The variety of available country codes is one of the things that separates ASMS.ai from simpler single-country alternatives.
New numbers are added to the pool on a daily basis. If a number you used previously no longer appears in the list, it has likely been retired to keep the pool healthy. Refresh the numbers page to see the current active inventory.
ASMS.ai and AnonymSMS: same service, sharper focus
ASMS.ai was previously known as AnonymSMS, a name many regular users still search for. The service is unchanged: the same free shared numbers, the same straightforward public inbox, the same no-account model. The rebrand reflects a clearer positioning around what the platform actually does best: anonymous SMS reception for verifications, privacy-conscious browsing, and developer automation.
The AnonymSMS name built genuine trust across several years of reliable operation, and that history carries forward. If you arrived here searching for AnonymSMS, you are in the right place. Everything that worked before still works, and the number pool has grown.
The developer and API tier
For engineers building products that require phone number verification at scale, or AI agents that need to complete SMS-gated flows automatically, ASMS.ai provides a REST API and a native MCP (Model Context Protocol) server. The API gives programmatic access to number lists and incoming messages; the MCP server lets AI agents handle phone verification steps natively without custom integration work.
These are paid features, designed for production workloads rather than casual one-off use. The free shared numbers give you a low-friction way to understand the service before committing to a subscription, useful for evaluating whether the number coverage fits your specific use case.